I've been wanting another small school of tetra in my tank for almost a year, but I've never pulled the trigger. Funny how I've never seen these guys anywhere around here ... LFS or petsmart etc.
They seem very territorial ... I must have 5 males somehow. 4 of them have taken to their own parts of the aquarium near the top/middle. The last is smaller than the other 4 and hides because he gets chased around a bit when he's out in the open.